KR0140447B1 - Boundary tape winding method for coil and boundary tape treatment coil - Google Patents

Abstract

According to the present invention, in order to prevent the lead wire from the terminal to the winding position to obstruct the winding and to protect the lead wire, a part of the boundary take-up 40 is wound around the trunk portion 3E of the bobbin 3, and wound The wire rod is guided from the terminal 3B to the pre-winding start position of the trunk portion 3E by crossing the boundary tape 40, and the remaining portion of the boundary tape 40 is wound to cover the traversed wire rod.

Description

Boundary tape winding method for coil and boundary tape processing coil

1 is a perspective view of a coil bobbin during a boundary tape winding operation showing an embodiment of the present invention.

2 is a perspective view of the coil bobbin during the boundary tape winding operation showing another embodiment of the present invention.

3 is a perspective view of a tape winding unit for winding a boundary tape

4 is a synthesis diagram of the side surface of the coil bobbin and the cross section of the boundary tape showing a conventional method of winding the boundary tape.

5 is an enlarged view of the main part of FIG.

* Explanation of symbols for main parts of the drawings

3: bobbin 3B: terminal

3E: fuselage 40: boundary tape

[Industrial use]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a tape winding method involved in coil winding operations for the improvement of a coil for use in a transformer or the like.

[Prior art]

The coil winding machine which performs coil winding operation is conventionally comprised by winding a wire rod in a fuselage | body part by sending a wire from a nozzle, rotating the bobbin attached to a spindle.

The end of the wire rod is guided to the terminal provided on the end face of the bobbin, which is almost parallel to the central axis of the bobbin from the terminal to the starting position of the winding of the bobbin body. The wire rod is hooked to the body of the bobbin by a pressing mechanism or tape at such a starting position, and then bends about 90 degrees as a winding wound around the body by the rotation of the bobbin.

In some coils, a pre-winding is performed only at the center of the body of the bobbin to prevent corona discharge due to poor pressure (pressure resistance) failure, so that a gap is provided between the flange portion of the bobbin and the winding portion. For example, as shown in FIG. 4, a barrier tape 40 is wound in advance on portions of both ends of the trunk portion 3E that are in the non-winding position. The boundary tape 40 is wound thicker than the thickness of the prewinding layer, thereby suppressing the wire rod from shifting laterally from the prewinding position during or after the prewinding.

[Problem of invention]

By the way, in the case of pre-winding the bobbin 3 on which the boundary tape 40 is wound, the lead line from the terminal 3B of the bobbin 3 to the winding part passes over one boundary tape and passes through the bobbin 3. Will reach the pre-winding position of. At this time, as shown in FIG. 5, the boundary tape 40 and the vertical portion 60 of the leader line, which exits the stairs of the fuselage 3E of the bobbin, protrude into the pre-winding space, and the protruding portion obstructs the pre-winding and becomes dizzy. There is a problem that causes colds. In addition, since the leader line is exposed in the state of floating on the boundary tape 40, there is also a problem that such an exposed portion is damaged because it is easy to move during the winding or shift after the winding.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to ensure that the lead wire from the terminal to the pre-winding position is securely held on the outer circumference of the bobbin in the coil winding operation using the boundary tape.

[Means for solving the problem]

The present invention relates to a method of winding a boundary tape for a coil wound around a non-winding position of the trunk portion of a coil bobbin comprising a trunk portion for winding the wire and a terminal for tying the end of the wire rod for winding. The wire is wound around the trunk, the wire is guided from the terminal to the winding start position of the trunk, and the rest of the border is wound to cover the traversed wire.

Alternatively, a groove for accommodating the wire rod from the terminal to the trunk portion by cutting the boundary tape into a plurality of tape segments having a length slightly shorter than turning one wheel of the trunk portion, and wrapping the tape slices around the trunk portion. Is formed in the axial direction across the boundary tape layer.

Alternatively, the present invention is a boundary tape processing coil wound around a non-winding position of the trunk portion of a bobbin composed of a body portion for pre-winding and a terminal for winding the end portion of the winding, in a pre-winding position across the boundary tape from the terminal. Leading wire rod is embedded in the lower layer of the boundary tape.

Alternatively, a wire is formed in the tape in the transverse direction of the tape, and the wire extending from the terminal to the pre-winding position is crossed in the tape.

[Action]

The wire rod is guided from the terminal to the pre-winding position of the fuselage in the step where a part of the boundary tape is wound on the fuselage, so that the stairs formed by the crossing of the edge tape are extremely small. By winding the remaining portion of the boundary tape over the wire rod, the wire rod of the cross section of the boundary tape is embedded in the lower layer of the boundary tape, and the stairway between the windings becomes smaller and the stator tape is more stably maintained.

Alternatively, the grooves extending from the terminal to the pre-winding position are accommodated in such grooves by forming a groove crossing the boundary tape at a predetermined position by winding the cut-out tape which is cut slightly shorter than turning one wheel of the fuselage to the bobbin. Thus, the wire rod can traverse the boundary tape without steps, and the wire rod of the cross section is stably maintained inside the groove.

EXAMPLE

1 to 3 illustrate embodiments of the present invention.

The bobbin 3 shown to Fig.1 (a) is equipped with the trunk | drum 3E of a winding object, and the two terminals 3B which tie the edge part of a winding wire.

The winding of the bobbin 3 is performed at the center portion of the trunk portion 3E, and the other portion of the trunk portion 3E is wound up to a thickness where the boundary tape 40 exceeds the thickness of the winding layer.

The pre-winding operation is performed by winding the wire rod supplied from the nozzle 13 shown in FIG. 1A on the trunk portion 3 by the rotation of the bobbin 3. In addition, the bobbin 3 is attached to the spindle which is not shown in figure, and rotates arbitrarily according to operation. In addition, the tape winding of the boundary tape 40 is carried out using a tape winding unit 23 (ataping unit) as shown in FIG. 3, and the pressing mechanism 18 is attached to bring the cut portion of the tape into close contact with the trunk portion 3E. I use it.

Such members constitute part of an automatic winding machine which operatively performs a series of coil operations, including a pre-winding operation or a tape winding operation. The spindle is held in a fixed position, and the spindle 13 and the pressing mechanism 18 are supported to be able to move in three axes by arms (not shown), respectively.

Tape winding unit 23 is a base member (25: a base member) supported to move in the vertical direction through the upper and lower cylinder 24 (a guide), a cutter (30: cutter) and the chuck ( 29: chuck) and the stroking member (32) is arranged.

The guide part 27 is provided with a guide groove 27A for guiding the insulating tape 26 and a guide groove 27B for guiding two tapes in parallel, and in the X direction of the drawing as the drive mechanism 37 is driven. To selectively position such guide grooves 27A, 27B in front of the chuck 29.

The chuck 29 includes holding members 29A and 29B that open and close according to the compression of the chuck cylinders 28A and 28B. Then, the tip of the insulating tape 26 or the boundary tape 40 is gripped in accordance with the moving position of the guide portion 27, and the drawing is moved in the Y-axis direction by a moving mechanism (not shown) installed on the base member 25. The tapes 26 and 40 held by the holding members 29A and 29B are taken out from the guide portion 27.

The cutter 30 is installed at the distal end of the guide part 27 and is displaced in the vertical direction (Z-axis) in accordance with the expansion and contraction of the cutting cylinder 31 sandwiched between the base member 25 and the guide part 27. ) And the tape 26 40 between the chuck 29.

The stroking member 32 is located below the bobbin 3 and is supported by the base member 25 via the stroking cylinder 33.

The stroking member 32 has two rectangular parallelepiped members 32A and 32B supported by a spring 36 and according to the expansion and contraction of the stroking cylinder 33, such members 32A and 32B are bobbins. The body 3E of 3) is elastically pressed.

At the time of winding the bobbin 3 of the boundary tape 40, the boundary tape 40 is first drawn out from the guide portion 27 by the chuck 29, and a part of the body portion is lifted by the rise of the base member 25. Attached to (3E).

Subsequently, the chuck 29 is opened to remove the tip of the boundary tape 40 from the gripping members 29A and 29B, while the stroking member 32 is raised to stroking the boundary tape 40 to the fuselage 3E. Rotate the bobbin (3). As a result, the boundary tape 40 is wound around the body portion 3E. When the boundary tape 40 is wound around the trunk portion 3E by one or two wheels, the rotation of the bobbin 3 is stopped, and the cutter 30 is raised to cut the boundary tape 40.

The distal end of the cut boundary tape 40 is not wound around the trunk portion 3E until the end, and continues to an appropriate length, and is floating in the air as shown in Fig. 1A.

Here, by moving the nozzle 13, one end of the wire rod is placed on the terminal 3B, and then the nozzle 13 is moved in the axial direction of the bobbin 3 to guide the wire rod to the starting point of the winding of the inner side of the boundary tape 40. do.

As shown in (b) of FIG. 1, when the wire crosses the boundary tape 40 and reaches the start-up winding position, the pressing mechanism 18 is moved to move the end portion floating in the air of the boundary tape 40 first. As shown in (c) of the figure, it is pressed onto the wire rod. As a result, the boundary tape transverse end portion of the wire rod, that is, the leader line, is caught by the body portion 3E. In addition, the portion wound up to this time constitutes the first half of the boundary tape 40.

Here, the chuck 29 is operated again to draw out the boundary tape 40 from the guide portion 27 and the stroking member 32 attached on the boundary tape 40 of the body portion 3E that is wound around. By stroking and rotating the bobbin 3, the new boundary tape 40 as the latter half is wound on the boundary tape 40 of the body 3E until it reaches a predetermined thickness. In this step, the wire rod sent out from the nozzle 13 together with the boundary tape 40 is also wound on the body portion 3E.

When the boundary tape 40 is wound to a predetermined thickness, the cutter 30 is raised to cut the boundary tape 40. The distal end of the cut boundary tape 40 is brought into close contact with the trunk portion 3E by slightly rotating the bobbin 3 while stroking with the stroking member 32.

As a result, the leader line is embedded in the lower layer of the boundary tape 40, and the wire rod is refracted at a right angle at the position extracted from the boundary tape 40 and wound around the body portion 3E. Compared to the case where the wire rod traverses the boundary tape 40 after winding all of the boundary tape 40, the cross section of the wire rod embedded in the lower layer of the boundary tape 40 has a very small step between the body 3E. Therefore, the exit of the wire rod over the stairs into the pre-winding space is also small. Thereby, the lead wire does not disturb the winding and no dizzy winding of the wire rod in the winding operation occurs.

In addition, since the boundary tape 40 is wound on the leader line, there is no fear that the leader line is shifted by the tension at the time of pre-winding. Therefore, a coil with a good winding part is obtained.

2 shows an embodiment of the present invention.

Here, as shown in (a) to (d) of FIG. 2, the boundary tape 40 is cut to a length slightly shorter than one wheel of the fuselage 3E so that the cut portion corresponds to the position of the terminal 3B. It is wound up in part 3E. As shown in (e) to (h) of FIG. 2, the boundary tape 40 reaches the final thickness by wrapping the boundary tape 40 cut similarly on the wound tape 40 after winding. Wound around (3E).

Thereby, the groove | channel 50 by a cutting part is formed in the boundary tape 40 wound by the trunk | drum 3E. In this step, since the wire rod is not attached to the terminal 3B, the bobbin 3 can be arbitrarily rotated, and the wound tape 40 thus wound can be used without the use of the pressing mechanism 18. 32) can be brought into close contact with the fuselage 3E.

After winding the boundary tape 40, the wire 13 is tied to the terminal 3B by the operation of the nozzle 13, and the nozzle 13 is moved to the pre-winding start position as shown in (i) of FIG. As such, the wire rod traverses the boundary tape 40 through the groove 50. The wire rod contacts the outlet of the groove 50 together with the start of the coil winding by the rotation of the bobbin 3, and at that position the wire rod bends 90 degrees and is wound on the trunk portion 3E. Since the boundary tape 40 is wound to a predetermined thickness, the refraction portion does not pass over the boundary tape 40 by the tension applied to the wire rod, and the refraction portion is maintained in contact with the exit of the groove 50.

In this case, since the lead wire from the terminal 3E to the pre-winding position is in direct contact with the fuselage 3E and crosses the boundary tape 40, there is no step between the fuselage and the lead wire, and the winding is extremely stable. All. In addition, the leader line arranged in the groove 50 does not have to be damaged or misaligned.

[Effects of the Invention]

As described above, according to the present invention, a portion of the boundary tape is wound on the fuselage, the wire rod can be guided from the terminal to the starting position of the winding, crossing the wound boundary tape, and the edge of the boundary tape is covered. Since the remaining part was wound, the boundary tape transverse section of the wire rod was stably held in the lower layer of the tape.

In addition, a groove is formed which traverses the boundary tape cut slightly shorter than turning one wheel of the fuselage, so that the boundary tape transverse end portion of the wire rod can be stably held in the groove.

In this way, a large step does not occur between the boundary tape transverse end portion of the wire rod and the winding portion, and it is possible to prevent the irrationality that the wire rod exiting the step interferes with the winding. In addition, it is possible to prevent irrationality in which the boundary tape transverse end portion of the wire rod is shifted or damaged.

Therefore, dizziness of the preheater is reduced and the boundary tape transverse end portion of the wire rod, that is, the lead wire is also protected, so that the effect of improving the quality of the coil can be expected.

Claims (4)

Boundary to the coil, which wraps a barrier tape at a non-winding position of the trunk portion of a coil bobbin consisting of a fuselage which performs winding winding and an end of the winding of a wire. In the method of winding the tape, a portion of the boundary tape is wound around the fuselage portion, the wire rod is guided from the terminal to the start winding position of the fuselage portion by crossing the wound boundary tape and covering the crossed wire rod. A method of winding a boundary tape to a coil, characterized in that the remaining portion of the boundary tape is wound. Boundary to the coil, which wraps a barrier tape at a non-winding position of the trunk portion of a coil bobbin consisting of a fuselage which performs winding winding and an end of the winding of a wire. In the tape winding method, the boundary tape is cut into a plurality of tape pieces of slightly shorter length than a round of the body part, and the tape pieces are folded and wound around the body part to wrap the tape part to the body part. A method of winding a boundary tape about a coil, characterized in that a groove for receiving the wire rod is formed in the axial direction across the layer of the boundary tape. On a boundary tape treatment coil wound with a plurality of layers of barrier tape wound at a non-winding position of the body portion of a bobbin consisting of a body portion for winding and a terminal for tying an end of a wire for winding. The boundary tape processing coil according to claim 1, wherein a wire rod extending from the terminal to the prewinding position is embedded in the lower layer of the boundary tape. On a boundary tape treatment coil wound with a plurality of layers of barrier tape wound at a non-winding position of the body portion of a bobbin consisting of a body portion for winding and a terminal for tying an end of a wire for winding. The boundary tape processing coil according to claim 1, wherein a groove is formed in the boundary tape in a tape transverse direction, and a wire rod extending from the terminal to the pre-winding position by crossing the boundary tape is disposed in the groove.